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https://github.com/projectacrn/acrn-hypervisor.git
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ba02583f2d
This patch ports the ACPI parsing module from BITS (BIOS Implementation Test Suite) in order to ease the access to ACPI tables during board XML generation. This library allows accessing ACPI table fields as Python class members, getting rid of hard coding or calculating offsets within tables. Compared to the original library, this port makes the following changes. * Extract only the scripts and functions that contribute to ACPI parsing. * Separate the parser of each ACPI table into different files. * Read raw ACPI tables from Linux sysfs. * Adapt to Python 3. Tracked-On: #5649 Signed-off-by: Junjie Mao <junjie.mao@intel.com>
31 lines
809 B
Python
31 lines
809 B
Python
# Copyright (C) 2021 Intel Corporation. All rights reserved.
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#
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# SPDX-License-Identifier: BSD-3-Clause
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#
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import sys
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from acpiparser.apic import APIC
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from acpiparser.asf import ASF
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from acpiparser.dmar import DMAR
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from acpiparser.facp import FACP
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from acpiparser.rtct import RTCT
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def parse_table(signature, path=None):
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if not path:
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path = f"/sys/firmware/acpi/tables/{signature}"
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signature = signature.rstrip("!")
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fn = getattr(sys.modules[f"acpiparser.{signature.lower()}"], signature)
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return fn(path)
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def make_parser(signature):
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def parse(path=None):
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return parse_table(signature, path)
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return parse
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parse_apic = make_parser('APIC')
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parse_asf = make_parser('ASF!')
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parse_dmar = make_parser('DMAR')
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parse_facp = make_parser('FACP')
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parse_rtct = make_parser('RTCT')
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